/*******************************************************************************

    Shoot Out (USA)             (c) 1985 Data East USA      DE-0219
    Shoot Out (Japan)           (c) 1985 Data East USA      DE-0203
    Shoot Out (Korean bootleg)  (c) 1985 Data East USA      DE-0203 bootleg

    Shoot Out (Japan) is an interesting board, it runs on an earlier PCB design
    than the USA version, has no sound CPU, uses half as many sprites and
    unusually for a Deco Japanese game it is credited to 'Data East USA'.
    Perhaps the USA arm of Deco designed this game rather than the Japanese
    arm?

    Shoot Out (Japan) uses the YM2203 ports for CPU bankswitching so it does
    not work with sound turned off.

    Shoot Out (Korean bootleg) is based on the earlier DE-0203 board but
    strangely features the same encryption as used on the DE-0219 board.  It
    also has some edited graphics.

    Driver by:
        Ernesto Corvi (ernesto@imagina.com)
        Phil Stroffolino
        Shoot Out (Japan) and fixes added by Bryan McPhail (mish@tendril.co.uk)

    TODO:

    - Fix coin counter
    - Lots of unmapped memory reads

*******************************************************************************/

/*

    2003-06-01  Added cocktail support to shootout
    2003-10-08  Added cocktail support to shootouj/shootoub
    2003-10-21  Removed input port hack

*/

#include "driver.h"
#include "cpu/m6502/m6502.h"
#include "sound/2203intf.h"

UINT8 *shootout_textram;

extern WRITE8_HANDLER( shootout_videoram_w );
extern WRITE8_HANDLER( shootout_textram_w );

extern PALETTE_INIT( shootout );
extern VIDEO_START( shootout );
extern VIDEO_UPDATE( shootout );
extern VIDEO_UPDATE( shootouj );

/*******************************************************************************/

static WRITE8_HANDLER( shootout_bankswitch_w )
{
	memory_set_bank(1, data & 0x0f);
}

static WRITE8_HANDLER( sound_cpu_command_w )
{
	soundlatch_w( offset, data );
	cpunum_set_input_line( 1, INPUT_LINE_NMI, PULSE_LINE );
}

static WRITE8_HANDLER( shootout_flipscreen_w )
{
	flip_screen_set(data & 0x01);
}

static WRITE8_HANDLER( shootout_coin_counter_w )
{
	coin_counter_w(0, data);
}

/*******************************************************************************/

static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x0fff) AM_READ(MRA8_RAM)
	AM_RANGE(0x1000, 0x1000) AM_READ(input_port_0_r)
	AM_RANGE(0x1001, 0x1001) AM_READ(input_port_1_r)
	AM_RANGE(0x1002, 0x1002) AM_READ(input_port_2_r)
	AM_RANGE(0x1003, 0x1003) AM_READ(input_port_3_r)
	AM_RANGE(0x2000, 0x27ff) AM_READ(MRA8_RAM)	/* foreground */
	AM_RANGE(0x2800, 0x2fff) AM_READ(MRA8_RAM)	/* background */
	AM_RANGE(0x4000, 0x7fff) AM_READ(MRA8_BANK1)
	AM_RANGE(0x8000, 0xffff) AM_READ(MRA8_ROM)
ADDRESS_MAP_END

static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x0fff) AM_WRITE(MWA8_RAM)
	AM_RANGE(0x1000, 0x1000) AM_WRITE(shootout_bankswitch_w)
	AM_RANGE(0x1001, 0x1001) AM_WRITE(shootout_flipscreen_w)
	AM_RANGE(0x1002, 0x1002) AM_WRITE(shootout_coin_counter_w)
	AM_RANGE(0x1003, 0x1003) AM_WRITE(sound_cpu_command_w)
	AM_RANGE(0x1004, 0x17ff) AM_WRITE(MWA8_RAM)
	AM_RANGE(0x1800, 0x19ff) AM_WRITE(MWA8_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0x2000, 0x27ff) AM_WRITE(shootout_textram_w) AM_BASE(&shootout_textram)
	AM_RANGE(0x2800, 0x2fff) AM_WRITE(shootout_videoram_w) AM_BASE(&videoram)
	AM_RANGE(0x4000, 0xffff) AM_WRITE(MWA8_ROM)
ADDRESS_MAP_END

static ADDRESS_MAP_START( readmem_alt, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x0fff) AM_READ(MRA8_RAM)
	AM_RANGE(0x1000, 0x1000) AM_READ(input_port_0_r)
	AM_RANGE(0x1001, 0x1001) AM_READ(input_port_1_r)
	AM_RANGE(0x1002, 0x1002) AM_READ(input_port_2_r)
	AM_RANGE(0x1003, 0x1003) AM_READ(input_port_3_r)
	AM_RANGE(0x2000, 0x21ff) AM_READ(MRA8_RAM)
	AM_RANGE(0x2800, 0x2800) AM_READ(YM2203_status_port_0_r)
	AM_RANGE(0x3000, 0x37ff) AM_READ(MRA8_RAM)	/* foreground */
	AM_RANGE(0x3800, 0x3fff) AM_READ(MRA8_RAM)	/* background */
	AM_RANGE(0x4000, 0x7fff) AM_READ(MRA8_BANK1)
	AM_RANGE(0x8000, 0xffff) AM_READ(MRA8_ROM)
ADDRESS_MAP_END

static ADDRESS_MAP_START( writemem_alt, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x0fff) AM_WRITE(MWA8_RAM)
	AM_RANGE(0x1800, 0x1800) AM_WRITE(shootout_coin_counter_w)
	AM_RANGE(0x2000, 0x21ff) AM_WRITE(MWA8_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0x2800, 0x2800) AM_WRITE(YM2203_control_port_0_w)
	AM_RANGE(0x2801, 0x2801) AM_WRITE(YM2203_write_port_0_w)
	AM_RANGE(0x3000, 0x37ff) AM_WRITE(shootout_textram_w) AM_BASE(&shootout_textram)
	AM_RANGE(0x3800, 0x3fff) AM_WRITE(shootout_videoram_w) AM_BASE(&videoram)
	AM_RANGE(0x4000, 0xffff) AM_WRITE(MWA8_ROM)
ADDRESS_MAP_END

/*******************************************************************************/

static ADDRESS_MAP_START( sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x07ff) AM_READ(MRA8_RAM)
	AM_RANGE(0x4000, 0x4000) AM_READ(YM2203_status_port_0_r)
	AM_RANGE(0xa000, 0xa000) AM_READ(soundlatch_r)
	AM_RANGE(0xc000, 0xffff) AM_READ(MRA8_ROM)
ADDRESS_MAP_END

static ADDRESS_MAP_START( sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x07ff) AM_WRITE(MWA8_RAM)
	AM_RANGE(0x4000, 0x4000) AM_WRITE(YM2203_control_port_0_w)
	AM_RANGE(0x4001, 0x4001) AM_WRITE(YM2203_write_port_0_w)
	AM_RANGE(0xd000, 0xd000) AM_WRITE(interrupt_enable_w)
	AM_RANGE(0xc000, 0xffff) AM_WRITE(MWA8_ROM)
ADDRESS_MAP_END

/*******************************************************************************/

INPUT_PORTS_START( shootout )
	PORT_START_TAG("DSW1")
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(	0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(	0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(	0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(	0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(	0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(	0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(	0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(	0x04, DEF_STR( 1C_3C ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(	0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(	0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x80, 0x80, "Freeze" )
	PORT_DIPSETTING(	0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )

	PORT_START_TAG("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START_TAG("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_COIN1 )

	PORT_START_TAG("DSW2")
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
	PORT_DIPSETTING(	0x01, "1" )
	PORT_DIPSETTING(	0x03, "3" )
	PORT_DIPSETTING(	0x02, "5" )
	PORT_DIPSETTING(	0x00, DEF_STR( Infinite ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(	0x0c, "20.000 Every 70.000" )
	PORT_DIPSETTING(	0x08, "30.000 Every 80.000" )
	PORT_DIPSETTING(	0x04, "40.000 Every 90.000" )
	PORT_DIPSETTING(	0x00, "70.000" )
	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(	0x30, DEF_STR( Easy ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Normal ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Hard ) )
	PORT_DIPSETTING(	0x00, DEF_STR( Very_Hard ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SPECIAL ) /* this is set when either coin is inserted */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK )
INPUT_PORTS_END

INPUT_PORTS_START( shootouj )
	PORT_INCLUDE(shootout)

	PORT_MODIFY("DSW1")
	PORT_DIPNAME( 0x20, 0x20, "Company Copyright" )
	PORT_DIPSETTING(	0x20, "Data East Corp" )
	PORT_DIPSETTING(	0x00, "Data East USA Inc" )

	PORT_MODIFY("DSW2")
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(	0x0c, "20K 50K" )
	PORT_DIPSETTING(	0x08, "30K 60K" )
	PORT_DIPSETTING(	0x04, "50K 70K" )
	PORT_DIPSETTING(	0x00, "70K" )
INPUT_PORTS_END


static const gfx_layout char_layout =
{
	8,8,	/* 8*8 characters */
	0x400,	/* 1024 characters */
	2,	/* 2 bits per pixel */
	{ 0,4 },	/* the bitplanes are packed in the same byte */
	{ (0x2000*8)+0, (0x2000*8)+1, (0x2000*8)+2, (0x2000*8)+3, 0, 1, 2, 3 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8 /* every char takes 8 consecutive bytes */
};
static const gfx_layout sprite_layout =
{
	16,16,	/* 16*16 sprites */
	0x800,	/* 2048 sprites */
	3,	/* 3 bits per pixel */
	{ 0*0x10000*8, 1*0x10000*8, 2*0x10000*8 },	/* the bitplanes are separated */
	{ 128+0, 128+1, 128+2, 128+3, 128+4, 128+5, 128+6, 128+7, 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8	/* every char takes 32 consecutive bytes */
};
static const gfx_layout tile_layout =
{
	8,8,	/* 8*8 characters */
	0x800,	/* 2048 characters */
	2,	/* 2 bits per pixel */
	{ 0,4 },	/* the bitplanes are packed in the same byte */
	{ (0x4000*8)+0, (0x4000*8)+1, (0x4000*8)+2, (0x4000*8)+3, 0, 1, 2, 3 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8 /* every char takes 8 consecutive bytes */
};

static const gfx_decode gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &char_layout,   16*4+8*8, 16 }, /* characters */
	{ REGION_GFX2, 0, &sprite_layout, 16*4, 	 8 }, /* sprites */
	{ REGION_GFX3, 0, &tile_layout,   0,		16 }, /* tiles */
	{ -1 } /* end of array */
};

static void shootout_snd_irq(int linestate)
{
	cpunum_set_input_line(1,0,linestate);
}

static void shootout_snd2_irq(int linestate)
{
	cpunum_set_input_line(0,0,linestate);
}

static struct YM2203interface ym2203_interface =
{
	0,0,0,0,shootout_snd_irq
};

static struct YM2203interface ym2203_interface2 =
{
	0,
	0,
	shootout_bankswitch_w,
	shootout_flipscreen_w,
	shootout_snd2_irq
};

static INTERRUPT_GEN( shootout_interrupt )
{
	static int coin = 0;

	if ( readinputport( 2 ) & 0xc0 ) {
		if ( coin == 0 ) {
			coin = 1;
			nmi_line_pulse();
		}
	} else
		coin = 0;
}

static MACHINE_DRIVER_START( shootout )

	/* basic machine hardware */
	MDRV_CPU_ADD(M6502, 2000000)	/* 2 MHz? */
	MDRV_CPU_PROGRAM_MAP(readmem,writemem)
	MDRV_CPU_VBLANK_INT(shootout_interrupt,1) /* nmi's are triggered at coin up */

	MDRV_CPU_ADD(M6502, 1500000)
	/* audio CPU */
	MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_VISIBLE_AREA(0*8, 32*8-1, 1*8, 31*8-1)
	MDRV_GFXDECODE(gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(256)

	MDRV_PALETTE_INIT(shootout)
	MDRV_VIDEO_START(shootout)
	MDRV_VIDEO_UPDATE(shootout)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")

	MDRV_SOUND_ADD(YM2203, 1500000)
	MDRV_SOUND_CONFIG(ym2203_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( shootouj )

	/* basic machine hardware */
	MDRV_CPU_ADD(M6502, 2000000)	/* 2 MHz? */
	MDRV_CPU_PROGRAM_MAP(readmem_alt,writemem_alt)
	MDRV_CPU_VBLANK_INT(shootout_interrupt,1) /* nmi's are triggered at coin up */

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_VISIBLE_AREA(0*8, 32*8-1, 1*8, 31*8-1)
	MDRV_GFXDECODE(gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(256)

	MDRV_PALETTE_INIT(shootout)
	MDRV_VIDEO_START(shootout)
	MDRV_VIDEO_UPDATE(shootouj)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")

	MDRV_SOUND_ADD(YM2203, 1500000)
	MDRV_SOUND_CONFIG(ym2203_interface2)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END


ROM_START( shootout )
	ROM_REGION( 2*0x20000, REGION_CPU1, 0 )	/* 128k for code + 128k for decrypted opcodes */
	ROM_LOAD( "cu00.b1",        0x08000, 0x8000, CRC(090edeb6) SHA1(ab849d123dacf3947b1ebd29b70a20e066911a60) ) /* opcodes encrypted */
	/* banked at 0x4000-0x8000 */
	ROM_LOAD( "cu02.c3",        0x10000, 0x8000, CRC(2a913730) SHA1(584488278d58c4d34a2eebeaf39518f87cf5eecd) ) /* opcodes encrypted */
	ROM_LOAD( "cu01.c1",        0x18000, 0x4000, CRC(8843c3ae) SHA1(c58ed4acac566f890cadf62bcbcced07a59243fc) ) /* opcodes encrypted */

	ROM_REGION( 0x10000, REGION_CPU2, 0 ) /* 64k for code */
	ROM_LOAD( "cu09.j1",        0x0c000, 0x4000, CRC(c4cbd558) SHA1(0e940ae99febc1161e5f35550aa75afca88cb5e9) ) /* Sound CPU */

	ROM_REGION( 0x04000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "cu11.h19",       0x00000, 0x4000, CRC(eff00460) SHA1(15daaa3d3125a981a26f31d43283faa5be26e96b) ) /* foreground characters */

	ROM_REGION( 0x30000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "cu04.c7",        0x00000, 0x8000, CRC(ceea6b20) SHA1(9fe363668db2e2759b3c531b4d7f23c65f2e8035) )   /* sprites */
	ROM_LOAD( "cu03.c5",        0x08000, 0x8000, CRC(b786bb3e) SHA1(5a209f01914ca4b206138d738a34640e0bcb3185) )
	ROM_LOAD( "cu06.c10",       0x10000, 0x8000, CRC(2ec1d17f) SHA1(74f0579a5ab3daf5d1290d3c15459f0f9b67bf79) )
	ROM_LOAD( "cu05.c9",        0x18000, 0x8000, CRC(dd038b85) SHA1(b1c3c1ab17c36a1c77726b5e485fc01581a4d97d) )
	ROM_LOAD( "cu08.c13",       0x20000, 0x8000, CRC(91290933) SHA1(60487f4eaf2e6c50b24c0f8fbd7abf92c04a342a) )
	ROM_LOAD( "cu07.c12",       0x28000, 0x8000, CRC(19b6b94f) SHA1(292264811206916af41d133f81dfd93c44f59a96) )

	ROM_REGION( 0x08000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "cu10.h17",       0x00000, 0x2000, CRC(3854c877) SHA1(2c8fe4591553ce798c907849e3dbd410e4fe424c) ) /* background tiles */
	ROM_CONTINUE(				0x04000, 0x2000 )
	ROM_CONTINUE(				0x02000, 0x2000 )
	ROM_CONTINUE(				0x06000, 0x2000 )

	ROM_REGION( 0x0200, REGION_PROMS, 0 )
	ROM_LOAD( "gb08.k10",       0x0000, 0x0100, CRC(509c65b6) SHA1(4cec37065a799ced4e7b6552f267aacc7f54ffe3) )
	ROM_LOAD( "gb09.k6",        0x0100, 0x0100, CRC(aa090565) SHA1(e289e77ec3402e86d93b873c0fa064f3e6277a62) )	/* priority encoder? (not used) */
ROM_END

ROM_START( shootouj )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )	/* 128k for code  */
	ROM_LOAD( "cg02.bin",    0x08000, 0x8000, CRC(8fc5d632) SHA1(809ac4eba09972229fe741c96fa8036d7139b6a8) )
	ROM_LOAD( "cg00.bin",    0x10000, 0x8000, CRC(ef6ced1e) SHA1(feea508c7a60fc6cde1efee52cba628accd26028) )
	ROM_LOAD( "cg01.bin",    0x18000, 0x4000, CRC(74cf11ca) SHA1(59edbc4633cd560e7b928b33e4c42d0125332a1b) )

	ROM_REGION( 0x04000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "cu11.h19",       0x00000, 0x4000, CRC(eff00460) SHA1(15daaa3d3125a981a26f31d43283faa5be26e96b) ) /* foreground characters */

	ROM_REGION( 0x30000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "cg03.bin",    0x00000, 0x8000, CRC(5252ec19) SHA1(c6848a815badd8845f91e898b0a52b7f12ed8a39) )  /* sprites */
	ROM_LOAD( "cg04.bin",    0x10000, 0x8000, CRC(db06cfe9) SHA1(e13c16232f54fe8467c21e0218c87606a19dd25c) )
	ROM_LOAD( "cg05.bin",    0x20000, 0x8000, CRC(d634d6b8) SHA1(e2ddd12b1b3fb0063104d414f0574b94dbfa0403) )

	ROM_REGION( 0x08000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "cu10.h17",       0x00000, 0x2000, CRC(3854c877) SHA1(2c8fe4591553ce798c907849e3dbd410e4fe424c) ) /* background tiles */
	ROM_CONTINUE(				0x04000, 0x2000 )
	ROM_CONTINUE(				0x02000, 0x2000 )
	ROM_CONTINUE(				0x06000, 0x2000 )

	ROM_REGION( 0x0200, REGION_PROMS, 0 )
	ROM_LOAD( "gb08.k10",       0x0000, 0x0100, CRC(509c65b6) SHA1(4cec37065a799ced4e7b6552f267aacc7f54ffe3) )
	ROM_LOAD( "gb09.k6",        0x0100, 0x0100, CRC(aa090565) SHA1(e289e77ec3402e86d93b873c0fa064f3e6277a62) )	/* priority encoder? (not used) */
ROM_END

ROM_START( shootoub )
	ROM_REGION( 2*0x20000, REGION_CPU1, 0 )	/* 128k for code + 128k for decrypted opcodes */
	ROM_LOAD( "shootout.006", 0x08000, 0x8000, CRC(2c054888) SHA1(cb0de2f7d743506789626304e6bcbbc292fbe8bc) )
	ROM_LOAD( "shootout.008", 0x10000, 0x8000, CRC(9651b656) SHA1(e90eddf2833ef36fa73b7b8d81d28443d2f60220) )
	ROM_LOAD( "cg01.bin",     0x18000, 0x4000, CRC(74cf11ca) SHA1(59edbc4633cd560e7b928b33e4c42d0125332a1b) )

	ROM_REGION( 0x04000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "cu11.h19",       0x00000, 0x4000, CRC(eff00460) SHA1(15daaa3d3125a981a26f31d43283faa5be26e96b) ) /* foreground characters */

	ROM_REGION( 0x30000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "shootout.005",   0x00000, 0x8000, CRC(e6357ba3) SHA1(1ceb46450a0c4f6f7f7109601ad6617f08364df5) )   /* sprites */
	ROM_LOAD( "shootout.004",   0x10000, 0x8000, CRC(7f422c93) SHA1(97d9a17956e838801c416461b020876c780bf260) )
	ROM_LOAD( "shootout.003",   0x20000, 0x8000, CRC(eea94535) SHA1(65819b7925ecd9ae6e62decb3b0164f627b73fe5) )

	ROM_REGION( 0x08000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "cu10.h17",       0x00000, 0x2000, CRC(3854c877) SHA1(2c8fe4591553ce798c907849e3dbd410e4fe424c) ) /* background tiles */
	ROM_CONTINUE(				0x04000, 0x2000 )
	ROM_CONTINUE(				0x02000, 0x2000 )
	ROM_CONTINUE(				0x06000, 0x2000 )

	ROM_REGION( 0x0220, REGION_PROMS, 0 )
	ROM_LOAD( "gb08.k10",       0x0000, 0x0100, CRC(509c65b6) SHA1(4cec37065a799ced4e7b6552f267aacc7f54ffe3) )
	ROM_LOAD( "gb09.k6",        0x0100, 0x0100, CRC(aa090565) SHA1(e289e77ec3402e86d93b873c0fa064f3e6277a62) )	/* priority encoder? (not used) */
	ROM_LOAD( "shootclr.003",   0x0200, 0x0020, CRC(6b0c2942) SHA1(7d25acc753923b265792fc78f8fc70175c0e0ec2) )	/* opcode decrypt table (bootleg only) */
ROM_END


static DRIVER_INIT( shootout )
{
	int length = memory_region_length(REGION_CPU1);
	UINT8 *decrypt = auto_malloc(length - 0x8000);
	UINT8 *rom = memory_region(REGION_CPU1);
	int A;

	memory_set_decrypted_region(0, 0x8000, 0xffff, decrypt);

	for (A = 0x8000;A < length;A++)
		decrypt[A-0x8000] = (rom[A] & 0x9f) | ((rom[A] & 0x40) >> 1) | ((rom[A] & 0x20) << 1);

	memory_configure_bank(1, 0, 16, memory_region(REGION_CPU1) + 0x10000, 0x4000);
	memory_configure_bank_decrypted(1, 0, 16, decrypt + 0x8000, 0x4000);
}


GAME( 1985, shootout, 0,        shootout, shootout, shootout, ROT0, "Data East USA", "Shoot Out (US)", 0)
GAME( 1985, shootouj, shootout, shootouj, shootouj, shootout, ROT0, "Data East USA", "Shoot Out (Japan)", 0 )
GAME( 1985, shootoub, shootout, shootouj, shootout, shootout, ROT0, "bootleg", "Shoot Out (Korean Bootleg)", 0 )
